diff --git a/libavcodec/cfhdenc.c b/libavcodec/cfhdenc.c
index 7169d20a8c..f54b19b032 100644
--- a/libavcodec/cfhdenc.c
+++ b/libavcodec/cfhdenc.c
@@ -553,7 +553,7 @@ static int cfhd_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                          width, height * 2);
     }
 
-    ret = ff_alloc_packet(avctx, pkt, 256LL + s->planes * (2LL * avctx->width * (avctx->height + 15) + 2048LL));
+    ret = ff_alloc_packet(avctx, pkt, 256LL + s->planes * (4LL * avctx->width * (avctx->height + 15) + 2048LL));
     if (ret < 0)
         return ret;
 
@@ -761,7 +761,6 @@ static int cfhd_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                         } else if (count > 0) {
                             count = put_runcode(pb, count, rb);
                         }
-
                         put_bits(pb, cb[index].size, cb[index].bits);
                     }